Finding the Fourth Proportional to 392,642,628.22, 541,871,069.79 and 216,430,226.74
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Solution
The fourth proportional to 392,642,628.22, 541,871,069.79 and 216,430,226.74 is: 298,687,075.90
Step by Step Solution
- Step 1: Write the proportion equation
392,642,628.22 : 541,871,069.79 = 216,430,226.74 : x - Step 2: Convert to fraction form
392,642,628.22/541,871,069.79 = 216,430,226.74/x - Step 3: Cross multiply
392,642,628.22x = 541,871,069.79 × 216,430,226.74 - Step 4: Simplify right side
392,642,628.22x = 117,277,278,498,496,064 - Step 5: Solve for x
x = 117,277,278,498,496,064/392,642,628.22 - Step 6: Final answer
x = 298,687,075.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.